String.class.php | searchcode

/sop/2.0beta1/ThinkPHP/Lib/ORG/Util/String.class.php

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PHP | 257 lines | 146 code | 10 blank | 101 comment | 19 complexity | 47ffb9d6e0bb55a05ebdb2f05d8814aa MD5 | raw file
Possible License(s): Apache-2.0, BSD-3-Clause, LGPL-2.1

<?php

// +----------------------------------------------------------------------

// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]

// +----------------------------------------------------------------------

// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.

// +----------------------------------------------------------------------

// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )

// +----------------------------------------------------------------------

// | Author: liu21st <liu21st@gmail.com>

// +----------------------------------------------------------------------

// $Id$



class String extends Think

{



    /**

     +----------------------------------------------------------

     * ??UUID ????

     +----------------------------------------------------------

     * @access public

     +----------------------------------------------------------

     * @return string

     +----------------------------------------------------------

     */

	 static public function uuid()

    {

        $charid = md5(uniqid(mt_rand(), true));

        $hyphen = chr(45);// "-"

        $uuid = chr(123)// "{"

               .substr($charid, 0, 8).$hyphen

               .substr($charid, 8, 4).$hyphen

               .substr($charid,12, 4).$hyphen

               .substr($charid,16, 4).$hyphen

               .substr($charid,20,12)

               .chr(125);// "}"

        return $uuid;

   }



	/**

	 +----------------------------------------------------------

	 * ??Guid??

	 +----------------------------------------------------------

	 * @return Boolean

	 +----------------------------------------------------------

	 */

	static public function keyGen() {

		return str_replace('-','',substr(com_create_guid(),1,-1));

	}



	/**

	 +----------------------------------------------------------

	 * ????????UTF8??

	 +----------------------------------------------------------

	 * @param string $string ???

	 +----------------------------------------------------------

	 * @return Boolean

	 +----------------------------------------------------------

	 */

	function is_utf8($str) {

		$c=0; $b=0;

		$bits=0;

		$len=strlen($str);

		for($i=0; $i<$len; $i++){

			$c=ord($str[$i]);

			if($c > 128){

				if(($c >= 254)) return false;

				elseif($c >= 252) $bits=6;

				elseif($c >= 248) $bits=5;

				elseif($c >= 240) $bits=4;

				elseif($c >= 224) $bits=3;

				elseif($c >= 192) $bits=2;

				else return false;

				if(($i+$bits) > $len) return false;

				while($bits > 1){

					$i++;

					$b=ord($str[$i]);

					if($b < 128 || $b > 191) return false;

					$bits--;

				}

			}

		}

		return true;

	}



	/**

	 +----------------------------------------------------------

	 * ???????????????

	 +----------------------------------------------------------

	 * @static

	 * @access public

	 +----------------------------------------------------------

	 * @param string $str ????????

	 * @param string $start ????

	 * @param string $length ????

	 * @param string $charset ????

	 * @param string $suffix ??????

	 +----------------------------------------------------------

	 * @return string

	 +----------------------------------------------------------

	 */

	static public function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true)

	{

		if(function_exists("mb_substr"))

			return mb_substr($str, $start, $length, $charset);

		elseif(function_exists('iconv_substr')) {

			return iconv_substr($str,$start,$length,$charset);

		}

		$re['utf-8']   = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";

		$re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";

		$re['gbk']	  = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";

		$re['big5']	  = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";

		preg_match_all($re[$charset], $str, $match);

		$slice = join("",array_slice($match[0], $start, $length));

		if($suffix) return $slice."";

		return $slice;

	}



	/**

	 +----------------------------------------------------------

	 * ????????????????

	 * ????6? ??????? ????

	 +----------------------------------------------------------

	 * @param string $len ??

	 * @param string $type ????

	 * 0 ?? 1 ?? ?? ??

	 * @param string $addChars ????

	 +----------------------------------------------------------

	 * @return string

	 +----------------------------------------------------------

	 */

	static public function rand_string($len=6,$type='',$addChars='') {

		$str ='';

		switch($type) {

			case 0:

				$chars='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.$addChars;

				break;

			case 1:

				$chars= str_repeat('0123456789',3);

				break;

			case 2:

				$chars='ABCDEFGHIJKLMNOPQRSTUVWXYZ'.$addChars;

				break;

			case 3:

				$chars='abcdefghijklmnopqrstuvwxyz'.$addChars;

				break;

			case 4:

				$chars = "????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????".$addChars;

				break;

			default :

				// ????????????oOLl???01???????addChars??

				$chars='ABCDEFGHIJKMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz23456789'.$addChars;

				break;

		}

		if($len>10 ) {//?????????????

			$chars= $type==1? str_repeat($chars,$len) : str_repeat($chars,5);

		}

		if($type!=4) {

			$chars   =   str_shuffle($chars);

			$str     =   substr($chars,0,$len);

		}else{

			// ?????

			for($i=0;$i<$len;$i++){

			  $str.= self::msubstr($chars, floor(mt_rand(0,mb_strlen($chars,'utf-8')-1)),1);

			}

		}

		return $str;

	}



	/**

	 +----------------------------------------------------------

	 * ????????????????

	 +----------------------------------------------------------

	 * @param integer $number ??

	 * @param string $len ??

	 * @param string $type ????

	 * 0 ?? 1 ?? ?? ??

	 +----------------------------------------------------------

	 * @return string

	 +----------------------------------------------------------

	 */

	static public function build_count_rand ($number,$length=4,$mode=1) {

			if($mode==1 && $length<strlen($number) ) {

				//???????????????

				return false;

			}

			$rand   =  array();

			for($i=0; $i<$number; $i++) {

				$rand[] =   rand_string($length,$mode);

			}

			$unqiue = array_unique($rand);

			if(count($unqiue)==count($rand)) {

				return $rand;

			}

			$count   = count($rand)-count($unqiue);

			for($i=0; $i<$count*3; $i++) {

				$rand[] =   rand_string($length,$mode);

			}

			$rand = array_slice(array_unique ($rand),0,$number);

			return $rand;

	}



	/**

	 +----------------------------------------------------------

	 *  ????????? ??????

	 *  ???????

	 +----------------------------------------------------------

	 * @param string $format ????

	 *     # ???? * ??????? $ ????

	 * @param integer $number ????

	 +----------------------------------------------------------

	 * @return string | array

	 +----------------------------------------------------------

	 */

	static public function build_format_rand($format,$number=1)

	{

		$str  =  array();

		$length =  strlen($format);

		for($j=0; $j<$number; $j++) {

			$strtemp   = '';

			for($i=0; $i<$length; $i++) {

				$char = substr($format,$i,1);

				switch($char){

					case "*"://???????

						$strtemp   .= String::rand_string(1);

						break;

					case "#"://??

						$strtemp  .= String::rand_string(1,1);

						break;

					case "$"://????

						$strtemp .=  String::rand_string(1,2);

						break;

					default://????????

						$strtemp .=   $char;

						break;

			   }

			}

			$str[] = $strtemp;

		}



		return $number==1? $strtemp : $str ;

	}



	/**

	 +----------------------------------------------------------

	 * ???????????? ??????

	 +----------------------------------------------------------

	 * @param integer $min ???

	 * @param integer $max ???

	 +----------------------------------------------------------

	 * @return string

	 +----------------------------------------------------------

	 */

	static public function rand_number ($min, $max) {

		return sprintf("%0".strlen($max)."d", mt_rand($min,$max));

	}

}

?>